Improvement in piston-packing



UNITED STATES PATENT OFFICEo THOMAS J. JONES, OE SUMMIT, NEW JERSEY, ASSIGNOE To DE. c. J. EAMES, OE NEW YORK, N. Y.

IMPROVEMENT IN PISTON-PACKING.

Specification forming part of Letters Patent No. 52,644, dated February 13, 1866.

To all whom it may concern:

Be it known that I, THOMAS J. JONES, of Summit, in the county of Union and State of New Jersey, have invented a new and Improved Self-Adj ustin g Spring for Piston-Packing; and I do hereby declare that the followingis a full, clear, and exact description thereot', which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part ot' this specification, in which- Figure 1. represents a transverse section ot' one of my springs. Fig. 2 is an inverted plan ofthe same. Fig. 3 is a sectional elevation of a piston packed with my springs. Fig. 4 is a plan ot' the same, the follower being removed to expose the spring-packing.

Similar letters ot' reference indicate corresponding parts.

The subject of this invention is a spring a series ot' which are used for packing pistons, and each of which is made ot' steel or other suitable material, in the form ot' a double M, connected at the front and open at the back, in such a manner that a spring is obtained which will adjust itself` to the curve otanysized cylinder, and thereby a perfect bearing throughout the entire length ot' the spring is insured.

A represents a spring, made of sheet-steel or any other suitable material, in the form Ot' a double Nl, with round corners, as shown in Figs. l and 4; or, if desired, it might be made with sharp corners, though my present experience leads me to use, by preference, springs with round corners.

These springs are closed in front and open at the back, so that they are able to accommodate themselves readily to the curve of the piston in which they are to be used. They are placed between the body B of the piston and the ordinary split rings C, as shown in Figs. 3 and 4, and a perfect bearing is obtained throughout the entire length of each spring.

rEhe springs are placed close together, as shown in Fig. et, and consequently the split rin gs are kept in closel contact with the inner surface ot' the cylinder throughout their entire circumference.

Each spring has six curves, a, ot' tension, and by their construction its elasticity is rendered superior to that of any spring known to me, and a piston-packing is obtained which is not liable to get out otl order for a very long time, and which requires no attention 011 the part of the engineer after it has once been properly adjusted.

My spring is applicable to steam or Water pistons of any size, and springs ot' the same size can be used for pistons ot' different sizes, said springs hein g able, as above remarked, to accommodate themselves readily to the curve of any-sized piston.

One advantage ot' my invention is that gradual curves are substituted for the acute angles frequently used in springs of analogous character. By this means the iieXure of the metal is made more uniform and extended over a greater distance, instead ot' being restricted to particular points. I thus render the sprin g more durable and less liable to break.

What I claim as new, and desire to secure by Letters Patent, is-

As an improvement in springs for pistonpacking, the double IVI-shaped spring closed in front and open at the back,.in the manner herein specified and represented.

THOS. J. JONES.

Witnesses M. M. LIVINGSTON, W. HAUEE. 

